I was just at both places. I havent been able to keep up with the blog, but there are pictures of Khao Sok in there. As far as Ko Lanta im not sure what the appeal is of the place. Its an ok beachy sort of place with resorts down the west coast. You can bike over to the east coast to Old Lanta town and the interior is ok, but nothing here is really that great and its about to hit season and get very expensive there. better off hitting Krabi then jump over to railey and Ao nong.
Assuming you arrive at Khao Sok by bus, you'll be dropped off at the main road, where all the guest houses will have a truck waiting to scalp you for their place. The village is about 1.8 km down the road and really just pick one of the trucks that seem ok and go with them for a night. I think one place that looked nice was tree house bungalows. I stayed at shiiit i forget green somthing. it was a cute place but might be a bit rustic for most tastes.